RF CLOSED NETWORKS
Saturn Antennas can design and supply a system that will compose a complete RF Network that when installed will provide from 1 to 256 user coaxial RF feed points. These RF drops can be very diverse in their use, RF power, connectors used and some adjustments to time-delay / phase angles may be options as well.
What is an RF Network?
This is a closed circuit RF distribution system designed to deliver a specific frequency or set of frequencies, of a user defined RF power level that can be used to feed various instruments, test chambers and/or customer products. These systems can be so diverse, it is impossible to cover all the various design possibilities here. Saturn Antennas can review your needs during consultation and design then deliver a complete system custom built to your needs.
Networks can distribute HF, VHF, UHF, etc. They can be Navigation Beacon signals, SCADA, OTA Digital TV broadcasts, or RF feeds from broad band receiving antennas. Nearly any RF signal can be readily distributed in a network. Some common systems distribute a 10MHz signal either produced with a signal generator or acquired from a roof antenna and used as an Atomic time base for instrument and/or product testing or tuning. L1 Band GPS signals are becoming much more common than 10MHz these days as they can also be used as an Atomic time base and your system can be tuned to pass the 1PPS signal as well. The new rage these days are GPS Networks as time bases for Server Farms in Data Centers.
Military product development engineers may wish to incorporate the L2 Band GPS signal, even multi-constellations as well and this is no problem for Saturn Antennas. Such GPS signals can be equipment derived by special devices designed to replicate a generic GPS signal or we can design a system that gathers actual satellite constellation signals from your location. Three advantages to this method are: Lower cost, the Network can represent actual GPS coordinates from your antenna site location and engineers can do real time testing of their products as their local weather or other atmospheric conditions change such as Sun spots for example. The output power can be regulated or unregulated between some or all of the user RF feed points.
Attenuation and/or RF noise can also be added into the signal as a method of replicating atmospheric problems. Multiple antennas can also be incorporated using a relay in order to replicate changing site locations thus providing different global coordinates as different antennas are sourced, or as a means of redundancy for critical applications. Multiple antennas also provide a means of testing one antenna against a standard or control antenna. Multiple antenna feeds can also be fed into the system simultaneously at differing gain levels or delay times as a means of testing discrimination capabilities of your equipment. All of this and more is possible without having to take your tests out doors or up against a window as a method of acquiring a GPS signal. It is quite common for our systems to be able to routinely acquire 9 to 14 satellites at any given time.
The preferred GPS Network methodology incorporates a high performance GPS repeater. This method provides microprocessor self diagnostics, user adjustable output power and output power self regulation as a means of compensation for atmospheric adorations and the natural satellite repositioning throughout the day. This unit uses a preamplifier, microprocessor controlled receiver and AGC power amplifier.
The possibilities seem endless but all share Saturn Antennas philosophies.
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